Process of bleaching yarn-cops.



- y' PATENTBDSEPT. 22, 190B. J. E. BLAND & E. J. GILLIGAN. PROCESS OP BLEACHING YARN COPS.

APPLICATION FILED NOV. 8, 1902.

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ffl mf/ No. $739,751. l 'PATBNTED' SEPT. 22, 1903. J. E. BLAND & E. J. GILLIGAN- PROCESS 0F BLEACHING YARN COPS'.

- APPLIUATION FILED Nov. a, 1902. no xonm.. f v a SHEETS-slum' 2.

No. 739,75i.

UNITED STATESv rai-.enten september ee, 190s.

PATENT OEErcE.

JOHN E. BLAND AND EDWARD J. GILLGAN, OF PAWTCKT, RHODE ISLAND, ASSVIGyNOitSl OF ONE-HALF TO EDWARD `W. MCDUFF AND FRANK J. MCDUFF, OF PAWTUCKET, RHODE ISLAND.

PROCESS oFBLEAcl-HNG YARNC0PS.

SPECIFICATION forming part of Letters Patent No. 739,751, dated September 2 2, 1903.

' Application le November 8, 1902, Serial No. 130,612. (lic specimens.)

ton-yarn cops,whereby thecotton yarn vin the cops is thoroughly treated by gravitating liquid; and the object of this treatment is to simplify the manner of bleaching the cops, whereby the saine can be handledy in large quantities and dispensing with the costly mechanical appliances as required in the vacuum or other process heretofore employed.

In the accompanying drawings, Figurel is a cop, the yarn of which is of'a dull gray color, as received from the spinning frame or mule, to be treated. by this process. Fig. 2 is an end view of the cop. Fig. 3V repre'- sents a tapered spindle which is inserted in the opening of the cop to retain the shape of said opening while the yarn is being treated by this process. Fig. 4 illustrates the mauner of packing the cops in a cloth bag, which is rst placed in a Wooden box of a rectangular shape, said bag having its upper edges caught on pins inserted in the edges of the box, which pins serve to keep the bag open Ythe process of bleaching.

during the time of packing. Fig. 5 is a top plan of Fig. 4, showing the manner of Vplacing the cops in the bag. Fig. 6'is a perspective view of a bag of cops as ready to receive Fig. 7 is a view in central vertical section of the preparatory tank for the liquor. Fig. 8 is a view in central vertical section of the circular kier, the sour-tank, and the storage-tank f or the acid, respectively. Fig.9 is a view in central vera tical section of the bleaching-tank and the storage-tank, respectively, for chlorid of lime orbleaching liquor. Figs. lO, 11, and 12 show the liquor passing through the cop, which has The cops to be bleached by this process have each a spindle c, as shown in Fig. 2, inserted through its opening c2 for the purpose of retaining said opening after the cop has been bleached, and these cops are then packed in a common cotton or linen cloth bag c3, which bag vhas been previously laid in a wooden box c* with its upper Aedges caught in pins c5, iilled with the cops, after which the mouth of the bag c3 is closed by stitching, as at c6 in Fig. 6.

vThe process of bleaching the cops is as fol-v lows: The preparatory tank A, Fig. 7 is rst filled with cold water from the pipe c, after which the valve a' is shut od. Then caustic is added to bring the water in the tank up to 3 of Twaddell. Then steam from the pipe b, which connects with a boiler, (not shown,) boils the contents up to 210 Fahrenheit, after which is added fifteen pounds owhite chipsoap, and this mixture is boiled until all is dissolved, which takes about forty-five minutes.

The next step in the process: The kier B,

which hold said bag in place until which is empty, is now packed with the bags of cops c c, as in Fig. 6, each ot' which bags weighs seven pounds, and rest upon an iron grate d, located about twelve inches from the closed bottom of the kier, andV the level of these cops comes within ,six inches of the bottom of a perforated sieve c, which is next placed on the kier. Then the valve f' of the delivery-pipe f, which has connectionwith the preparatory Itank A, is opened to allow the boiling liquor to flow into the saidy sieve e and through its perforations e. e', saturating the copsin the bags and dripping through the openings d of the' grate d into the charnber g in the bottom of the kier, from whence it returns againthrough the bags to its normal level, as indicated by the dotted line h,

which by this time the said liquor has become reduced in temperature. The valve ff is then shut off and the top of the kier is covered with wooden planks i t', after which the valve f2 is opened to allow steam from the pipe f3, which has connection with the boiler,

to penetrate the aforesaid liquor in the kier and to cause the liquor to again boil. j is a vomit-pipe which is secured to the grate d and extends centrally of the kier and directly over the outlet of the steam-pipe f3 and the liquor and assisted by the steam in said pipe 5 f3 is raised from the chamber g through said vomit-pipe, from whence it strikes against a detlector la, which is secured to the central plank, as shown, and causes the liquor to flow over upon the sieve e. A ment of the liquor is regulated by the said valve f2, so that the ebullition of the liquor is on a level of about two-inches above the sieve e. The liquor being lifted from the bottom of the kier B up through ther vomit-pipey iows through perforations of the sieve e and through the cops c c in the bags over and over again for twelve hours, after which time the valve f2 is closed and the valve Z is opened to allow the unused liquor to pass through the waste or drainage pipe l.

T-he next step in the process: After the kier B has been emptied of the liquor cold water from the pipe m is run on the sieve e for one hour to cool off the bags and wash oi any impurities in the yarn. Then the plank covering it' and sieve e are removed from the top of the kier, and the bags are next packed in a sour-tank C. Then a sieve e2 is placed on top of said tank C, after which power is applied to operate a rotary pump n to deliver a cold sulfuric-acid liquid (which is contained in a storage-tank D and of two degrees of strength) through the pipes o and o and into the sieve e2 and keeping the same completely covered to a depth of about three inches as it drips through the sieve e2, through the bags of cops, through the openings d2 of a tray da, and into a chamber g', from whence it passes through a discharge-pipe p, which and this second operation is kept up for two hours. This second treatment of the cops c c in the sour-tank O is to neutralize whatever caustic is left in the cops from the preparation used in the kier, so to make the cops more susceptible to the bleaching properties of the next process, and thus make this second operation the `foundation of the bleaching for the cops. Now after the cops are thus prepared they are placed in the bleaching-tank E so that they lay in the same position as they were previously placed in the kier B and sour-tank C and corresponding to the position of cop having its side A uppermost, asseen in Fig. 10. Power is applied to a rotary pump r1. to deliver chemic of chlorid of lime of one and a half degrees of strength, which is contained in a tank F, through the suction-pipe o2, from whence it is forced by the said pump up through the pipe 03 to be deposited on the sieve e4, and this sieve, which is covered to a depth of three inches of the chemio, is provided with perforations e5 e5, through which the chemio passes,throu gh the side A ofthe cops,through the openings d4 of a tray d5, and into thel This vomiting move- I chamber g2, from whence it passes through the discharge-pipe p', which delivers the chemie again into the tank F, and this op-l eration is kept up for two hours,after which the pump is stopped and the bags are now turned and placed in the said tank E so that the side Bzof the cop is uppermost and corresponding to the position as illustrated in Fig. 1l. The pump n is again put-in operation to deliver the said chemie from the tank F for another period of two hours. The pump is again stopped, and this time the bags are turned and placed in the said tank so the side C3 of the cop is uppermost and corresponding to the position as shown in Fig. 12. Then the same operation of delivering the said chemie is given for another period of two hours, after which the pump n is stopped and the valt/e132 of the discharge-pipe p isclosed and the valve q is opened. The valve m is now opened to allow cold water to run from the pipe m2 through the sieve e4 and through -the bags of cops and `into the chamber g2, from whence it flows through the drainage or waste pipe q. This operation is kept up for one hour, and this process completes the bleaching. The alkali yin the cops c c must now be neutralized to prevent the yarn from being burned by the vchemio in the tank F. To do this, the bags are again placed in the sourtank C so that the side A', Fig. l0, of the cops is uppermost, and the same operation of delivering the cold acid from the tank D is put through for one hour, after which the bags are again turned ;so that the side B2, Fig. ll, of the cops is uppermost, and the pump n is again run for 'another one hour, and this completes the neutralization of the alkali.

delivers this liquid again into the tank D, 1

From this description it will be understood `that there are three turning positions of the cops in the process of bleaching in the chloridyof-lime tank E and two turning of the cops :in the sour-tank C in the last souring-one side on the first sour-ing after they are taken zout of the kier B, and before they are put into thebleaching-tank E. After the process ofthe neutralization of the alkali the acid `left in the cops has now to be neutralized, and to do this the valve m3 is opened to allow cold water from the pipe m4 to run through the sieve e2 and through the bags of cops to the drainage-pipe r, and this operation is vkept up for one hour, after which they are IOO IIO

a Wooden tray in a drying-room, and this completes the process.

Ve claim as a novel and useful invention and desire to secure by Letters Patent- 1. The herein-described process of treating textile material such as cotton and Wool,` yarn on cops, bobbins and the'like, consisting in wrapping the material to be treated in Iiltering-bags, tinelyV dividing the treating liquors through a suitable perforated medium,

permitting the said liquors to` drip slowly upon the materials to be bleached,'allowing the same to slowly fall by gravity therethrough, whereby the material may be thoroughly bleached throughout, and removing said bleached material to a washing-vat, substantially as described.

3. The herein-described process of bleach- 'ing textile materials such as cottonand wool yarn on cops and bobbins, consisting in placing the material to be treated in suitable filtering-bags, directing the treating'liquors to said material in a finely-divided state, allowing thesaid liquors to drip slowly'upon the materials to be bleachedl and feed therethrough by gravity and intermittently reversing the said materials through presentation to the bleaching liquorswhereby they may be thoroughly bleached and iinally Washing said materials, `substantially as described.

In testimony whereof We affix our signatures in presence of two witnesses. JOHN E. BLAND.

EDWARD J. GILLIGAN. Witnesses:

'EDWARD W. 'B/IGDUFF,

FRANK J. MCDUFF. 

